Gin-saw gummer.



N0. 635,063. Patented ct. I7, |899.

I. C. SHRADER.

GIN SAW GUMIIEB. (Application med .my 2o, 11899.)

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. Patented uct. I7, |899. I. C. SHRADER.

GIN SAW SUMMER.

(Application tiled July 20, 1899;)

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ISAAC C. SHRADE, OF HARPERSVILLE, ALABAMA.

clN-SAW commen.'

SPECIFICATION forming part of Letters Patent No. 635,063, dated October17, 1899.. Application filed July ZO, 1899. Serial No. 724,495. (Nomodel.)

To @ZZ whom, it may concern:

Beit known that I, IsAAc C. SHRADER,a citi- Zen of the United States,residing at Harpersville, in the county of Shelby and State of Alahama,have invented certain new and useful Improvements in Gin-Saw Gummers;and Ido declare the followingto be af ull, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a part of this specification.

This invention relates to new and useful improvements in devices forgumming gin-saws; and it consists in providingr a simple and efficientdevice whereby the teeth may be gummed by means of a bit orcutting-knife, which is mounted upon a pivoted holder, actuated by meansof a cam-operated lever, a suitable gage being provided to regulate thedepth at which the teeth of the saw are to be cut, the cutting bit orknife being reversible and beveled at each end and longitudinally adjustable in its holder. j

Another feature of the invention resides in means for regulating theangle at which the teeth are to be cut, which consists in providing anadjustable arm which regulates the pitch at which the cutting-knife isheld with relation to the teeth and in the provision of an arm rigidlyheld to the stock of the device for holding the same steady and rigidduring the gumming operation.

To these ends and to such others as the in vention may pertain the sameconsists, further, in the novel construction, combination, andadaptation of parts, as will be hereinafter more fully described andthen specifically defined in the appended claim.

My invention is clearly illustrated in the accompanying drawings, whichwith the letters of reference markedA thereon form part of thisapplication and in which drawings similar letters of reference indicatelike parts throughout the several views, in which- Figure l is a sideelevation showing a shaft carrying a series of gin-saws, showing themanner in which my gummer is applied to the shaft. Fig. 2 is a top planview of the device. Fig. 3 is an edge view. Fig. 4 is a cross-sectionalview. Fig. 5 is a longitudinal mounted.

sectional view through the entire knife. Fig. 6 is a detail view. l

Reference now being had to the details of the drawings by letter, Adesignates the stock of the device, which has a suitable handle Bsecured at one end of the stock and prefer ably at an obtuse angle toits length, and slightly downwardly inclined and mounted in the oppositeend of the stock in a slot therein is a die C, which is preferablysquare in outline and has a series of recesses C', which conform to thedifferent-sized teeth of the gin-saws, which are held in contact withsaid die during the. gumming operation. This plate is mounted so as torotate within the slot of the stock, whereby a particular die may beturned so as to come opposite the cutting-knife. This die is mountedupon an adj listing-screw, as shown.

Mounted on one face of the stock is an adjusting-bar D, which has anelongated and curved slot D' therein, through which aperture a screw D2passes, whereby the angle at which said bar or rod D with referencetothe stock may be adjusted. This adjusting-rod D turns on a pivot E, andits rear end is held in an adjusted position by means of the screw D2.The outer free end of said adj Listing-bar is preferably turned at aslight angle, and the under portion of said bar is adapted to restagainst the shaft F, on which the gin-saws are On the opposite face ofthe stock from that to which the said adj usting-rod is connected ispivotedna bar G, which has an elongated transverse slot G therein, andpassing through this slot is a screw G2, whereby said bar G, which isbent at a right angle at G3 and mounted upon a pivotal screw G4, may beadjusted. The upper portion of this bar G is adapted to rest against theunder portion of the shaft carrying the gin-saws, as shown, for thepurpose of holding the stock firmly while the teeth of the saw aregummed. The saw which is to be gummed is held between the bifurcated orslotted end of the stock and against the die, as before described,and-by means of said rods the instrument is held so that thegumming-knife will cut the teeth truly.

Mounted upon the upper face of the stock is the knife-carrying lever H,being pivoted to said stock at Il". The under face of this IOO lever isrecessed away, as shown in the drawings at K, and sliding longitudinallyin this recess is the double-ended cutting knife or bit L, the ends ofwhich are slightly inclined, and the shank portion of said cutting-knifehas an elongated slot L', and passing through said slot and secured tothe lever is a tightening-screw M, whereby said knife may be held in afixed position with reference to said lever, the under face of the knifeand the lever being preferably flush. Adj ustably held upon one edge ofsaid knife-carrying lever is a gage N, being pivoted at N to said lever,and this gage is recessed on its inner face,which is adjacent to thelever, and a portion of the gage extends overthe beveled face of thelever and the beveled end of the cutting-knife which extends vout iiushwith the beveled portion of said lever. This gage N has a shoulderedportion N2, which is cut slightly on the arc of a circle and is adaptedto be adjusted to the tooth which is to be gummed. Extending laterallyfrom the opposite face of the lever from that to which the gage isconnected is a recessed plate Q, said recessed portion being adapted totravel upon the cam R, which is formed on the pivoted head R', said headbeing held to the side of the stock by means of the screw R2. To thishead is connected the shank portion S of the handle S', the latter beingoutwardly bent for convenience in operation. It will thus be seen thatas the camhead is rocked on its pivot the free end of the lever carryingthe gage and cutting-knife will be swung back and forth with the cuttingedge and gage passing between the teeth of the saw.

The cutting-knife may be adjusted or disposed at any desired angle, asmay be found most expedient.

In operation my device is adjusted to the shaft or arbor on which thegin saws are keyed. The bar D is adj usted on its pivot, so as to tiltthe device to adjust the same to the particular saw being gummed, andafter setting the gage the teeth of the saw are brought adjacent to thedie through which the gage and knife work, and by pulling up on theoperating-handle the edge of the tooth may be readily gummed, and by theprovision of the rods D and G the device is held rigidi)T while eachtooth is being gummed. After a tooth has been gummed the lever is thrownback to its starting position and the machine moved slightly until asecond tooth comes in proper position opposite the die, after which thesame operation is repeated until all the teeth about the circumferenceof the saw have been properly gummed.

Having thus described my invention, what I claim to be new, and desireto secure by Letters Patent, is-

The improved saw gummer herein described, consisting of the stock, withhandle, at one end and a slot at the other, a die mounted in said slot,an'adjusting-bar mounted on one facevof the stock and having anelongated curved slot, an adjusting-screw disposed in said slot, thefree end of said bar being turned at an angle, a bar pivoted on theopposite side of the stock and having an elongated slot, a screw passedthrough said slot, the said bar being bent at substantially a rightangle, a knife-carrying lever pivotally mounted upon the upper face ofthe stock, and recessed upon its under face, a knife mounted to slide insaid recess, means for holding the knife in its adjusted position, agage adj ustable upon the said lever and recessed upon its under face,and having shouldered portion, a recessed plate extending laterally fromthe lever on the side opposite the gage, a cam formed on a pivoted headand a handle connected to said head and bent outwardly, allsubstantially as and for the purpose specified.

In testimony whereof I affix my signature in' presence of two witnesses.

ISAAC OSHRADER. Vitnesses:

MATHEW S. WILSON, JNO. T. GLAZE.

